Week 8: Digital Media
Digital Imaging uses an: electronic image sensor to record the image as data
There are two types of sensors: CCD(charge coupled device) and CMOS(complementary metal-oxide semiconductor)
A single element, point or dot that contains color: pixel DV: Digital Video; DVB; Digital Video Broadcast; HDTV: High-definition television fps = frames per second European TV uses PAL format, which runs at 24 or 25 frames per second. Movies (as shown in theaters) also commonly used these frame rates. US TV uses the NTSC format, which runs at 29.997 frames per second (effectively 30). Interlaced: Displays alternating lines of video at 60 fps. The “I” refers to interlaced. Progressive: Displays full frames of video at 30 fps. The “p” refers to progressive. Equivalent frame rate as seen by the human eye is similar, and each has pros and cons. 240p: VHS quality 480p: Standard definition TV (actually 480i) 720p: High definition TV 1080p: High definition TV (as 1080i), Blu-Ray Dots per inch (DPI) and pixels per inch (PPI)
How are pixels and resolution related? the number of pixels drawn across and down are how resolution is measured
What is bit depth? the number of bits of information each pixel can understand
Digital Imaging uses an: electronic image sensor to record the image as data
There are two types of sensors: CCD(charge coupled device) and CMOS(complementary metal-oxide semiconductor)
A single element, point or dot that contains color: pixel
DV: Digital Video; DVB; Digital Video Broadcast; HDTV: High-definition television
fps = frames per second
European TV uses PAL format, which runs at 24 or 25 frames per second. Movies (as shown in theaters) also commonly used these frame rates.
US TV uses the NTSC format, which runs at 29.997 frames per second (effectively 30).
Interlaced: Displays alternating lines of video at 60 fps. The “I” refers to interlaced.
Progressive: Displays full frames of video at 30 fps. The “p” refers to progressive.
Equivalent frame rate as seen by the human eye is similar, and each has pros and cons.
240p: VHS quality
480p: Standard definition TV (actually 480i)
720p: High definition TV
1080p: High definition TV (as 1080i), Blu-Ray
Dots per inch (DPI) and pixels per inch (PPI)
How are pixels and resolution related? the number of pixels drawn across and down are how resolution is measured
What is bit depth? the number of bits of information each pixel can understand